Please help explain math problem...?

Given the following data: 18,12,18,20,16,20,18,36,16,18, 14,20,24,20,5,18,10,15,24. Determine the mean, median and mode of this data. Analyze the data and discuss what the impact of extreme values is and which type of data is most representative of the population from which it comes. Identify which metric can have more than one value, which metric(s) most likely is part of the raw data, and which is least likely to be a value of the data